The relationship between the contents of available boron and available molybdenum in soil with the contents of boron and molybdenum of tobacco leaf in Luoping

Abstract:

The relationship between the soil available boron and available molybdenum content with the boron and molybdenum content in flue cured tobacco leaf and the relationship between the soil available boron and available molybdenum interaction with the boron and molybdenum content in flue cured tobacco leaf in Luoping tobacco growing areas was analyzed.The results indicated that:(1）The soil available boron content in Luoping county ranged from 0.051 to 3.033 mg/kg with the mean of 0.540 mg/kg and the coefficient of variation was 77.78%.The soil available molybdenum content was abundant,which ranged from 0 to 3.458 mg/kg with the mean of 0.489 mg/kg and the coefficient of variation was 98.77%.(2）The boron content in flue cured tobacco leaf in Luoping county ranged from 2.163 to 35.684 mg/kg with the mean of 16.301 mg/kg.The number of samples in the range of high quality flue cured tobacco leaves was 88.89%.The molybdenum content in flue cured tobacco leaf was low,which ranged from 0.059 to 4.059 mg/kg with the mean of 0.535 mg/kg.The number of samples satisfying the growth and development of tobacco leaves was 48.83%.(3）The boron content in flue cured tobacco leaf had high positive correlation with the soil available boron content at 0.01 level.The correlation coefficient was 0.215.Based on the correlation analysis,the regression equation built between soil available boron and the boron content in flue cured tobacco leaf was y^=14.720+2.925x.The molybdenum content in flue cured tobacco leaf had high positive correlation with the soil available molybdenum content at 0.01 level.The correlation coefficient was 0.411.Based on the correlation analysis,the regression equation built between soil available molybdenum and the molybdenum content in flue cured tobacco leaf was y^=0.335+0.409x.(4）As for the content of boron in tobacco leaves,there was a very significant influence by the interaction between available boron and available molybdenum in soil.But the effect of interaction of available boron and available molybdenum in soil on the content of molybdenum in tobacco leaves did not reach a significant level.
Key words：Luoping tobacco growing areas;flue cured tobacco;boron;molybdenum;relationship analysisdoi：1011838/sfsc20170608